Chair arm



FIG. 1 is an isometric view of a left side of the chair arm showing thenew design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a front elevation view thereof; and,

FIG. 6 is a top plan view thereof.

The ornamental design for a chair arm, as shown and described.